phonolitic

Variant of phonolite

noun

a fine-grained, extrusive igneous rock consisting chiefly of alkali feldspar and nepheline

Origin: Fr phonolithe < phono- (see phono-) + -lithe (see -lite): transl. of Ger klingstein < klingen, to ring, clink + stein, stone

Related Forms:

Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.
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